Bài 2: Nhân đa thức với đa thức
Các câu hỏi tương tự
Tính(rút gọn)
1, x^ 2 - 2x + 5 - (x - 7)(x + 2)
2,-5x(x-5)+(x-3)(x^2-7)
3, x(x^2-x-2)-(x+5)(x-1)
4, (-x+5)(x+3)+(2x-1)(x+3)
5, -4x(x+3)(x-4)-3x(x^2-x+1)
Bài 1:a) x (x^2 + 2) + 2x(1-dfrac{1}{2}x^2)4 b) (2x)^2 (x – 1) + x(x^2 + 4x) 40c) 3x(x – 2) – 3(x^2 – 3) 8d) 2x^2(4x^3 + 2x) + (x^2 – 2)(- 2x)^3 20Bài 2: P 3x(dfrac{2}{3}x^2 − 3x^4) + (3x)^2 (x^3 – 1) + (- 2x + 9)x^2 - 12
Đọc tiếp
Bài 1:
a) x (\(x^2\) + 2) + 2x\((1-\dfrac{1}{2}x^2)=4\)
b) (2x)\(^2\) (x – 1) + x(\(x^2\) + 4x) = 40
c) 3x(x – 2) – 3(\(x^2\) – 3) = 8
d) 2\(x^2\)(4\(x^3\) + 2x) + (\(x^2\) – 2)(- 2x)\(^3\) = 20
Bài 2:
P = 3x(\(\dfrac{2}{3}\)\(x^2\) − \(3x^4)\) + (3x)\(^2\) (\(x^3\) – 1) + (- 2x + 9)\(x^2\) - 12
Bài 1
1) (x^2-2x+3)*(x-4)
2) (2x^2-3x-1)*(5x+2)
3) (x^2-2xy+y^2)*(y^2+2xy+x^2+1)
4) (x-7)*(x+5)*(x-5)
5) (x+2y)*(x-y)
6) (x+5)*(x^2-2x+3)
7) 2x(x+5)*(x-1)
8) (x-2y)*(x+2y)
9) (x-1)*(x^2+x+1)
10) (1-2x^2+x)*(x-4+x^2)
Rút gọn :
1, 2x(x-5)-(x-2)2-(x+3)(x-3)
2, (x+1)2-3(x-5)(x+5)-(2x-1)2
3, (x-1)3-(x-3)(x2+3x+9)
4, (x+5)(x2-5+25)-(x+2)3
5, 2x(x-7)-(x+3)(x-2)2+(x+1)2
6, (2x+5)(x-3)-(x+5)(x-1)-(x-4)2
8, (x+5)(x-5)(x+2)-(x+2)3
thực hiện phép tính :
a)2x^2+3(x-1)(x+1)-5x(x+1)
b) (8-5x)(x+2)+4(x-2)(x+1)+2(x-2)(x+2)+10
c) 4(x-1)(x+5)-(x+2)(x+5)-3(x-1)(x+2)
Tìm x, biết:
a) (x-2)(x-1) = x(2x+1)+2
b) (x+2)(x+2) - (x-2)(x-2) = 8x
c) (2x-1)(x2-x+1) = 2x3-3x2+2
d) (x+1)(x2+2x+4) - x3 - 3x2 + 16 = 0
e) (x+1)(x+2)(x+5) - x3- 8x2 = 27
Thực hiện phép tính
a) (2x+3)*(4x+5)
b) (x-2)*(3x-4)
c) (x+2)*(x2-2x+4)
d) (3x2-x-2)*(x-3)
e) (5x2-x-1)*(-x+3)
f) (x+2)*(3x-1)+x*(x2-x+2)
g) (x-3)*(3-x)+x*(x2-3)
h) (2x-4)*(2x+4)-(4x2+16)
i) x*(x+3)-x2(x-2)
k) (x+2)*(3x-1)-(2x-1)*(-x+3)
1) 5(x-3) (x-7)-(5x+1) (x-2)= -8
2) x(x+1) (x+2)-(x+4) (3x-5)= 84-5x
3) (9x2-5) (x+3)-3x2(3x+9)=(x-5) (x+4)-x(x-11)
4) (x2-4x+16) (x+4)-x(x+1) (x+2)+3x2=0
5) (8x+2) (1-3x)+(6x-1) (4x-10)=-50
6) (x2+2x+4) (2-x)+x(x-3) (x+4)-x2+24=0
7) (\(\dfrac{x}{2}\)+3) (5-6x)+(12x-2) (\(\dfrac{x}{4}\)+3)=0
a)(2-x)(1 2x) (1 x) - (x^4 x^3-5x^2-5)
b) (x^2-7) (x+2) - (2x-1)(x-14)+ x(x^2-2x-22) + 35
1. (2x +3) (x- 5) +(X-4 ) + (x-5) ( x-2 0 = (3x -5) ( x-4)
2. (8x-3) (3x +2) - (4x+ 7) (x+4) = (2x + 1) (5x-1)
3. 2x^2 + (x -1) (x+1)= 5x (x+10
4. 4- ( x-1) (x+5) - (x+2) (x+5) = 3(x-1) (x+2)